Non-native species can appear harmless for decades, then turn invasive.
非本地物种可能会在几十年内看起来无害，继而变得有入侵性。
What is more, non-native species can appear harmless for decades, then turn invasive.
更重要的是，非本地物种可能会在几十年内看起来无害，然后变得有入侵性。
"Invasive alien species are non native species which are accidentally or intentionally introduced into new areas. They range from microbes to mammals," Dr MacKinnon says.
麦克·金南博士说，“侵入性外来物种是偶然或故意被引入新地区的非本土物种，其范围涉及从微生物到哺乳动物的多个物种。”
"Invasive alien species are non native species which are accidentally or intentionally introduced into new areas. They range from microbes to mammals," Dr MacKinnon says.
麦克·金南博士说，“侵入性外来物种是偶然或故意被引入新地区的非本土物种，其范围涉及从微生物到哺乳动物的多个物种。”
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